| LSG | Laminated Safety Glass 
| Others |
| LSG | Landing Ship, Gantry
| Others |
| LSG | Landing Ship, Gun
| Others |
| LSG | Langone Student Government
| Others |
| LSG | Large Scale Geostrophic
| Others |
| LSG | Large-Scale Geostrophic
| Others |
| LSG | Lazy Stupid and Godless
| Others |
| LSG | Learning and Skills Group
| Others |
| LSG | Learning Support Group
| Others |
| LSG | Learning Systems Group
| Others |
| LSG | Left Shoe Gang
| Others |
| LSG | Legislative Study Group
| Others |
| LSG | Levert Sweat Gill
| Others |
| LSG | Light To Solar Gain
| Others |
| LSG | Lighting Science Group
| Others |
| LSG | Lighting Signing and Guarding
| Others |
| LSG | Limiting Speed Governor
| Others |
| LSG | Linux Support Group
| Others |
| LSG | Linux Systems Group
| Others |
| LSG | Little School Girl
| Others |
| LSG | Living Style Guide
| Others |
| LSG | Local Self Governance
| Others |
| LSG | Local Self Government
| Others |
| LSG | London Studio Group
| Others |
| LSG | London Suzuki Group
| Others |
| LSG | Lone Star Governance
| Others |
| LSG | Lord Saint Germain
| Others |
| LSG | Lot Section Grave
| Others |
| LSG | Love Serving God
| Others |
| LSG | Low Sulfur Gasoline
| Others |
| LSG | Lubbock Shooters Group
| Others |
| LSG | Lucasfilm Story Group
| Others |
| LSG | Lufthansa Service Gesellschaft
| Others |
| LSG | Lufthansa Service GMBH
| Others |
| LSG | Lutheran Services of Georgia
| Others |